[Bug fortran/60549] [4.9 Regression] Run time doubled for fatigue.f90 due to SAVE changes

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60549

--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> And what exact change do you get with a mere
> http://gcc.gnu.org/ml/gcc-patches/2014-03/msg00754.html
> patch, against same version without it (e.g. both without the SAVE 
> for MAIN__ change, or both with that change)?

With the patch, the timing when compiling with '-Ofast -fwhole-program' is
between 1.40 to 1.45s before r208590 and above 3s after it. The later timing is
unaffected by the addition of -fipa-pta. I did not test the effect of -fipa-pta
before r208590 and I have no access to the machine before this evening.